constrain ground object

[pseudo messiah]

This is probably really simple but I cant seem to get it to work.

How can I constrain an object at ground level to follow another object above it but not rise and fall with the higher object?

In other words I have a box up in the air that moves on all axis while the ground object below follows but is restricted to just two axis (in this case x and z ) Im trying to do this in 3dsmax 7.

[ross_coe]

you'll be glad to hear that it's quite a quick and simple process

1. select the box in the air. right-click and select "wire-parameters" from the menu that pops up. then select "transform---->position---->x position"
2. a line appear coming from the box, so next you need to click on the ground object. from the menu that pops up, again select "transform---->position---->x position".
3. once this is done, the "parameter wiring" box appears. you simple click the arrow pointing to the right (in the middle of the 2 windows) which then turns yellow, and then hit "connect". close the parameter wiring box.
4. now when you move the box, the ground object should move with it in the x-axis (but not the y or z axis).
5. repeat this for any other axis you want.....making sure you wire the y position of the box to the y position of the ground object, or the z position to the z position (which ever axis you choose).

hope this helps
you can also wire rotation to position and vice versa (should the need ever arise) and even wire things like the radius of a sphere to the position or rotation of another object.

[pseudo messiah]

Perfect. So simple. Thank you very much.